A robber who struck a Mill Valley bank Wednesday is apparently the same man who has robbed banks in Novato and Sonoma County, a sheriff's investigator said.

The latest crime occurred at about 3:15 p.m. at the Westamerica branch in the Strawberry Village Shopping Center. The robber gave the teller a demand note without displaying a weapon, and he left with an undisclosed amount of money, said sheriff's Lt. Jamie Scardina.

The robber was described as white and in his late 20s with a large build and facial hair under his lip. He was wearing a black sweatshirt, tan shorts, sunglasses and a red and black San Francisco 49ers hat.

He was last seen getting into a mid-2000s tan Honda then went south on Redwood Highway, Scardina said.

Anyone with information can call sheriff's department at 499-7265. Tipsters can also call the multilingual Bay Area Crime Stoppers hotline at 800-222-8477, where they can remain anonymous and be eligible for a possible cash reward.

Investigators suspect the same man was involved in a bank robbery last month at the US Bank inside the Safeway in Hamilton, as well as in-store bank branches in Rohnert Park and Santa Rosa.